LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator

LTC6908 - Dual Output Oscillator with Spread Spectrum Modulation
LTC6909 - 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation

LTC3407-2 - Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

Features

  • Click Here For LTC3407 Evaluation Kits
  • High Efficiency: Up to 95%
  • Very Low Quiescent Current: Only 40µA
  • 2.25MHz Constant Frequency Operation
  • High Switch Current: 1.2A on Each Channel
  • No Schottky Diodes Required
  • Low RDS(ON) Internal Switches: 0.35Ω
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Short-Circuit Protected
  • Low Dropout Operation: 100% Duty Cycle
  • Ultralow Shutdown Current: IQ < 1µA
  • Output Voltages from 5V down to 0.6V
  • Power-On Reset Output
  • Externally Synchronizable Oscillator
  • Small Thermally Enhanced MSOP and 3mm × 3mm DFN Packages

Typical Application

LTC3407-2
LTC3407-2
Back to Top

Description

The LTC3407-2 is a dual, constant frequency, synchronous step down DC/DC converter. Intended for low power applications, it operates from 2.5V to 5.5V input voltage range and has a constant 2.25MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors with a profile ≤1.2mm. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35Ω, 1.2A power switches provide high efficiency without the need for external Schottky diodes.

A user selectable mode input is provided to allow the user to trade-off noise ripple for low power efficiency. Burst Mode® operation provides high efficiency at light loads, while Pulse Skip Mode provides low noise ripple at light loads.

To further maximize battery life, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle), and both channels draw a total quiescent current of only 40µA. In shutdown, the device draws <1µA.

Back to Top

Packaging

MS-10, DFN-10

LTC3407-2
LTC3407-2
Back to Top

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3407AEDD#PBF DFN 10 E $3.71 $2.60 View
LTC3407AEDD#TRPBF DFN 10 E   $2.66 View
LTC3407AEDD-2 DFN 10 E $4.21 $2.95 View
LTC3407AEDD-2#PBF DFN 10 E $4.21 $2.95 View
LTC3407AEDD-2#TR DFN 10 E   $3.01 View
LTC3407AEDD-2#TRPBF DFN 10 E   $3.01 View
LTC3407AEMSE#PBF MSOP 10 E $3.71 $2.60 View
LTC3407AEMSE#TRPBF MSOP 10 E   $2.66 View
LTC3407AEMSE-2 MSOP 10 E $4.21 $2.95 View
LTC3407AEMSE-2#PBF MSOP 10 E $4.21 $2.95 View
LTC3407AEMSE-2#TR MSOP 10 E   $3.01 View
LTC3407AEMSE-2#TRPBF MSOP 10 E   $3.01 View
LTC3407AIDD DFN 10 I $4.27 $2.99 View
LTC3407AIDD#PBF DFN 10 I $4.27 $2.99 View
LTC3407AIDD#TR DFN 10 I   $3.05 View
LTC3407AIDD#TRPBF DFN 10 I   $3.05 View
LTC3407AIDD-2 DFN 10 I $4.84 $3.39 View
LTC3407AIDD-2#PBF DFN 10 I $4.84 $3.39 View
LTC3407AIDD-2#TR DFN 10 I   $3.45 View
LTC3407AIDD-2#TRPBF DFN 10 I   $3.45 View
LTC3407AIMSE MSOP 10 I $4.27 $2.99 View
LTC3407AIMSE#PBF MSOP 10 I $4.27 $2.99 View
LTC3407AIMSE#TR MSOP 10 I   $3.05 View
LTC3407AIMSE#TRPBF MSOP 10 I   $3.05 View
LTC3407AIMSE-2 MSOP 10 I $4.84 $3.39 View
LTC3407AIMSE-2#PBF MSOP 10 I $4.84 $3.39 View
LTC3407AIMSE-2#TR MSOP 10 I   $3.45 View
LTC3407AIMSE-2#TRPBF MSOP 10 I   $3.45 View
LTC3407EDD DFN 10 E $3.71 $2.60 View
LTC3407EDD#PBF DFN 10 E $3.71 $2.60 View
LTC3407EDD#TR DFN 10 E   $2.66 View
LTC3407EDD#TRPBF DFN 10 E   $2.66 View
LTC3407EDD-2 DFN 10 E $4.21 $2.95 View
LTC3407EDD-2#PBF DFN 10 E $4.21 $2.95 View
LTC3407EDD-2#TR DFN 10 E   $3.01 View
LTC3407EDD-2#TRPBF DFN 10 E   $3.01 View
LTC3407EDD-3 DFN 10 E $4.21 $2.95 View
LTC3407EDD-3#PBF DFN 10 E $4.21 $2.95 View
LTC3407EDD-3#TR DFN 10 E   $3.01 View
LTC3407EDD-3#TRPBF DFN 10 E   $3.01 View
LTC3407EDD-4 DFN 10 E $4.21 $2.95 View
LTC3407EDD-4#PBF DFN 10 E $4.21 $2.95 View
LTC3407EDD-4#TR DFN 10 E   $3.01 View
LTC3407EDD-4#TRPBF DFN 10 E   $3.01 View
LTC3407EMSE MSOP 10 E $3.71 $2.60 View
LTC3407EMSE#PBF MSOP 10 E $3.71 $2.60 View
LTC3407EMSE#TR MSOP 10 E   $2.66 View
LTC3407EMSE#TRPBF MSOP 10 E   $2.66 View
LTC3407EMSE-2 MSOP 10 E $4.21 $2.95 View
LTC3407EMSE-2#PBF MSOP 10 E $4.21 $2.95 View
LTC3407EMSE-2#TR MSOP 10 E   $3.01 View
LTC3407EMSE-2#TRPBF MSOP 10 E   $3.01 View
LTC3407EMSE-4 MSOP 10 E $4.21 $2.95 View
LTC3407EMSE-4#PBF MSOP 10 E $4.21 $2.95 View
LTC3407EMSE-4#TR MSOP 10 E   $3.01 View
LTC3407EMSE-4#TRPBF MSOP 10 E   $3.01 View
LTC3407IDD-2#PBF DFN 10 I $4.84 $3.39 View
LTC3407IDD-2#TRPBF DFN 10 I   $3.45 View
LTC3407IMSE-2#PBF MSOP 10 I $4.84 $3.39 View
LTC3407IMSE-2#TRPBF MSOP 10 I   $3.45 View
Buy Now
Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Evaluation Kits

Part Number Description Price
DC568A LTC3407EMSE | Dual DC/DC Converter, Vin = 2.5V to 5.5V, Vout1 = 1.2V/1.5V/1.8V @ 600mA, Vout2 = 2.5V @ 600mA $100.00
DC734A LTC3407-2EDD | Dual Synchronous Step-Down DC/DC Converter, Vin = 2.5V - 5.5V, Vout1 = 1.2V / 1.5V / 1.8V @ 800mA, Vout2 = 2.5V @ 800mA $100.00
DC701A LTC3407EDD | Dual Synchronous Step-Down DC/DC Converter, Vin = 2.5V - 5.5V, Vout1 = 1.2V / 1.5V / 1.8V @ 600mA, Vout2 = 2.5V @ 600mA $100.00
Buy Now


Back to Top

Applications

  • PDAs/Palmtop PCs
  • Digital Cameras
  • Cellular Phones
  • Portable Media Players
  • PC Cards
  • Wireless and DSL Modems
Back to Top

Simulate

LTSpice / SwitcherCAD III is a powerful FREE circuit simulator and schematic capture program, providing macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

  • Step 1. If you do not already have a copy of LTSpice, click here to download and install LTSpice / SwitcherCAD III

  • Step 2. Once LTSpice is installed, click here for a ready to run  demonstration circuit of the LTC3407-2.

  • Step 3. If LTspice / SwitcherCAD III does not automatically open after clicking the above link, you can instead run the simulation by right clicking on the link and selecting “Save Target As”. After saving the file to your computer, start LTSpice and open the demonstartion circuit by selecting "Open" from the "File" menu.
Back to Top